Here we answer the question: "What two numbers multiply to -156 and add up to 155?"
The answer to your question is:
-1 and 156
Below we illustrate and prove that -1 and 156 multiply to -156 and add up to 155:
-1 × 156 = -156
-1 + 156 = 155
Are you asking because you are trying to figure out how to factor the following quadratic equation?
x2 + 155x - 156 = 0
If so, the solution to factor the quadratic equation above is:
(x - 1 ) (x + 156)
To summarize, since -1 and 156 multiply to -156 and add up 155, you know that the following is true:
x2 + 155x - 156 = (x - 1 ) (x + 156)
Multiply To One Number and Add Up To Another
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